39226621 has 20 divisors (see below), whose sum is σ = 48421472. Its totient is φ = 31112424.

The previous prime is 39226619. The next prime is 39226631. The reversal of 39226621 is 12662293.

It is not a de Polignac number, because 39226621 - 2¹ = 39226619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39226601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 912226 + ... + 912268.

Almost surely, 2^39226621 is an apocalyptic number.

It is an amenable number.

39226621 is a deficient number, since it is larger than the sum of its proper divisors (9194851).

39226621 is an frugal number, since it uses more digits than its factorization.

39226621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 69 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 39226621 is about 6263.1159178160. The cubic root of 39226621 is about 339.7767305793.

The spelling of 39226621 in words is "thirty-nine million, two hundred twenty-six thousand, six hundred twenty-one".